While using the Exchange 2010 Management Console and navigating to the recipient mailbox, I received:
An error caused a change in the current set of domain controllers. It was running the command ‘Get-Recipient -PropertySet ConsoleLargeSet -resultSize ’1000′ -SortBy DisplayName -RecipientType ‘UserMailbox”.
This error started to occur shortly after the decommission of our old primary domain controller.
To fix this error, close the EMC and delete the xml file:
“C:\Users\username\AppData\Roaming\Microsoft\MMC\Exchange Management Console”
Quelle: http://d1it.wordpress.com/2011/01/27/exchange-2010-management-console-an-error-caused-a-change-in-the-current-set-of-domain-controllers/

